REXROTH A4VTG90EP4PD/33RNC4V92FB24AS-0 / 803083775

Product Overview

The Rexroth A4VTG90EP4PD/33RNC4V92FB24AS-0 (Material Number: 803083775) is a heavy-duty axial piston variable displacement pump from the Bosch Rexroth A4VTG series, engineered specifically for closed-circuit hydrostatic transmission systems. Featuring a bent-axis rotary group design, this tandem configuration pump delivers high-pressure oil flow with infinitely variable displacement, enabling precise control of speed and torque in both drive directions. The A4VTG series is purpose-built for the demanding propulsion and working hydraulic circuits found in mobile machinery, offering exceptional power density, high overall efficiency, and long service life under continuous industrial duty. With a nominal displacement of 90 cm³/rev and a robust through-drive interface, this model serves as a central energy source in closed-loop drive systems requiring reliable, reversible, and dynamically responsive hydraulic power.

Technical Specifications

Parameter	Specification / Feature
Component Type	Axial Piston Variable Displacement Pump (Closed Circuit)
Model Designation	A4VTG90EP4PD/33RNC4V92FB24AS-0 / 803083775
Series	A4VTG (Bent-Axis, Tandem Configuration)
Nominal Displacement	90 cm³/rev (primary pump)
Operating Pressure	High-Pressure Industrial Grade (up to 400 bar peak / 350 bar continuous)
Control Type	EP4PD – Electric Proportional Displacement Control with Pressure Cut-Off
Direction of Rotation	Reversible (clockwise / counter-clockwise)
Mounting & Connection	Standard SAE / ISO Flange Interface with Through-Drive
Circuit Type	Closed-Loop Hydrostatic Transmission

Engineering Features & Advantages

Precision Performance: Bent-axis axial piston rotary group delivers high volumetric and mechanical efficiency across the full displacement range, with infinitely variable swivel angle for smooth, stepless speed and torque control in both directions.
Advanced Proportional Control: The EP4PD electric proportional control with integrated pressure cut-off enables precise, electro-hydraulic displacement modulation, ideal for electronic drive management and load-sensing system integration.
Tandem Configuration: Integrated through-drive allows the mounting of a secondary pump (e.g., auxiliary or charge pump), reducing installation space and eliminating the need for separate drive couplings.
Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened piston/cylinder interfaces, high-load bearings, and robust housing designed for high-pressure closed-circuit duty.
Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth standards, allowing straightforward retrofit into existing hydraulic systems without rework.

Typical Industrial Applications

With a nominal displacement of 90 cm³/rev and a robust through-drive interface, this model serves as a central energy source in closed-loop drive systems requiring reliable, reversible, and dynamically responsive hydraulic power.

PRODUCT IMAGES

Rexroth A4VTG90EP4PD/33RNC4V92FB24AS-0 / 803083775 Axial Piston Variable Displacement Pump

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Shop the genuine REXROTH A4VTG90EP4PD/33RNC4V92FB24AS-0 / 803083775 Axial Piston Variable Displacement Pump. This German-made hydraulic pump features a swashplate design, delivering high-efficiency, reliable fluid power for heavy-duty industrial systems.